Life on Earth (1979) is an epic 13-programme series, presented by David Attenborough, offering a chronological account of the flora and fauna of planet Earth over a period of 3,500 million years. Whether recounting the first journey from the sea to the land, the development of insects and flowers, or The First Forests and The Lords of the Air, Attenborough's enthusiasm is infectious. He guides us through The Infinite Variety of life from microbes to marsupials, via an unforgettable meeting with mountain gorillas, to conclude with The Compulsive Communicators, mankind itself.
This programme looks at the evolution of fish. They have developed a multitude of shapes, sizes and methods of propulsion and navigation. The sea squirt, the lancelet and the lamprey are given as examples of the earliest, simplest types. Then, about 400 million years ago, the first back-boned fish appeared. The Kimberley Ranges of Western Australia are, in fact, the remnants of a coral reef and the ancient seabed. There, Attenborough discovers fossils of the earliest fish to have developed jaws. These evolved into two shapes of creature with cartilaginous skeletons: wide ones (like rays and skates) and long ones (like sharks).
5/13 • 1979 • Nature